Elastic webbing



June 2, 1925.

W. KOPS ELASTIC WEBBING Filed may 10, 1924 INVENTOR I I5 ATTOR Patented June 2, 1925.

UNITED STATES 4 1,540,480 PATENT OFFICE.

WALDEMAR KOPS, or NEW YORK, N. Y., ASSIGNOR TO xors Baas, me, A ooaroah- TION or NEW YORK.

ELASTIC WEBBING.

Application filed May 10, 1924. Serial No. 712,225.

To all whom it may concern: 1 Be it known that I, IVALDEMAR KoPs, a citizen of the United States, residing in the borough of Manhattan, city, county, and State of New York, have invented an Improvement in Elastic Webbing, of which the following is a specification.

My present invention relates to elastic webbing and more particularly to that type 1912. In weaving this type of webbing it is customary to inter-weave the elastic. wefts and the inelastic wefts with the war elastic wefts are woven under a predetermined tension which is-considerably less than the elastic limit thereof in order that when released after the weaving operation the elastic wefts may contract to thus produce the elasticity of the webbing. It will be understood that in this form of webbing the maximum stretch of the webbing is substantially that of the elastic wefts during the weaving operation. This is because of the inelastic wefts being of equal length with the elastic wefts during the weaving operation and which consequently and as will be readily understood prevent the web from stretching beyond the extent to which the elastic wefts are stretched during the weaving.

The object of my present invention is to produce a web of the nature to which the invention relates and in which the stretch of the webbing is limited only by the maximum stretch of the elastic wefts employed. In carrying out the invention the webbing made in accordance therewith is preferably constructed with inelastic. marginal sections and an intermediate elastic section and in the weaving, as hereinafter more particularly described, the elastic wefts are laid between the warps under tension in the elastic sec-' tion of the web and the inelastic wefts in the elastic section are entirely removed or eliminated from the weavin and severed adjacent the inner' edges 0 the inelastic sections after the weaving is completed so as to permit the web to stretch to the full extent of the elastic wefts employed.

In the drawing: Fig. is a plan of the obverse side of an elastic webbing made in accordance-with my present invention.

F g. 21s a plan of the reverse side.

Fig. 3 IS a plan on an enlarged scale of a portion of the reverse side.

Fig. ,4 is a transverse section of the web after weaving, and

Fig. 5 is a section illustrating the web after the unwoven inelastic weft threads have been cut therefrom.

In the drawings which illustrate my invention more or less diagrammatically, the usual nelastic war threads are placed in thecustomary para lel relationship and are indicated at 10. The inelastic weft or fillp ing threads are indicated at 11 and the elasthreads and in the weaving operatlon the tie weft or filling threads are indicated at 12. In the weaving of the web the inelastic warpthreads or the inelastic weft threads or both the inelastic warp and weft.

be otherwise arranged in the webbing as the intended use of the same may require. As clearly illustrated in Figs. 1 and 2 of the drawing, the elastic wefts are so interwoven in the inelastic sections as to eX- tend approximately one-half the way across the same; that is to say the inner portion of each inelastic marginal section A and B is made with the elastic wefts interwoven with the inelastic wefts and warps, while in the outer portions of these marginal sections A and B the inelastic wefts and warps only are interwoven and preferably this outer portion of these inelastic marginal sections is woven tubular. By this construction, as will be understood, a portion of the inelastic marginal sections is provided in which there are no elastic strands whatsoever so that this portion of the marginal sections may be employed for sewing o r otherw1se attaching the webbing in position for use in a garment or other structure without puncturing or otherwise interfering with the elastic wet'ts or other elastic strands, although the elastic wefts as interwoven in the inner portions of the inelastic marginal sections is so tightly interwoven with the inelastic weits and warps that when so punctured there is little, if any, detrimental eiiect in the elastic strands.

In weaving the web the elastic wefts are woven under a predetermined tension and in the inelastic sections of the web are interwoven with both the inelastic warp and weft threads, while in the elastic section of the web these elastic weft threads are interwoven only with the inelastic warps, the inelastic weft threads being removed by devices employed for this purpose in the loom so that the elastic wefts in the elastic section of the web are only interwoven with the inelastic warps. After the weaving operation is complete the inelastic weft threads are then cut or otherwise severed along'the inner edges of the inelastic sections A and 13 and the adjacent edges of the elastic section C as for example along the lines D and E respectively.

It will now be understood that after the weaving operation the elastic wefts contract to their normal condition which determines the normal width of the weft and that after the inelastic wefts have been severed or cut from the web as hereinbefore described the extent to which the web may be stretched is limited only by the elasticity of the elastic wefts employed and not to the extent to which the elastic wefts were stretched by the tension applied thereto during the weaving operation as is the case when both the elastic and inelastic wells are interwoven with the inelastic warps in the elastic section of the web.

I claim as my invention:

1. In an elastic webbing having an elasticand an inelastic section, inelasticnvarp and weft threads, and elastic strands, all of which are interwoven in the inelastic section while in the elastic section the elastic strands are only interwoven with the threads running angularly thereto.

2. In an elastic webbing having inelastic marginal sections and an intermediate elastic section, elastic wetts and inelastic warps and wefts, the said elastic wefts being interwoven with both the inelastic warps and wefts in the inelastic marginal sections and the elastic wefts being interwoven only with the inelastic warps in the intermediate elastic section.

3. In an elastic webbing having inelastic marginal sections and an intermediate elastic section, inelastic warps and wefts, elastic wefts, the said elastic wefts being interwoven with both the inelastic warps and wefts in the inelastic marginal sections and interwoven only with the inelastic warps in the intermediate elastic section.

4. In an elastic webbing having inelastic marginal sections and an intermediate elastic section, inelastic warps and wefts, elastic wefts, the said elastic wefts being interwoven with both the inelastic warps and wefts in the inelastic marginal sections and interwoven only with the inelastic warps in the intermediate elastic sections, the said webbing having no inelastic wefts in the intermediate elastic section thereby permitting the webbing to stretch to the elastic limit of the said elastic wefts.

5. In an elastic webbing having inelastic marginal sections and an intermediate elastic section, inelastic warps, elastic and inelastic wefts, with the elastic wetts in the intermediate elastic section being interwoven only with the inelastic warps and the elastic wefts being interwoven with both the inelastic warps and wefts in the inelastic marginal section but extending only part way into the same so as to provide a portion of the inelastic marginal sections in which there are only inelastic wefts and warps.

6. In an elastic webbing having inelastic marginal sections and an intermediate elastic section, inelastic warps and wetts and elastic wetts, the said elastic wefts bein interwoven with a portion of both of the inelastic warps and wefts in the inelastic marginal sections to provide a portion of each of these sections .in which the elastic wefts are interwoven and another portion of each of these sections in which none of the elastic wefts are interwoven, the said elastic wefts being interwoven only with the inelastic warps in the elastic section of the webbing.

Signed by me this 12th day of April, 1924.

WALDEMAR KOPS. 

